Reenforced carton



K. WANDEL REENFORCED CARTON Filed Oct. 6, .9l9

Inve?2%?".' Kari Z/arzaZeZ w Patented Feb. 17, 1925.

UNITED STATES PATENT OFFICE.

KURT WANDEL, OF. FRANKLIN. MASSACHUSETTS, ASSIGNOB T SAFE-PACK MILLS, OFBOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

nnnnroncnn CARTON.

To a]? whom it may concern:-

Be it known that I, Kmrr IVA-Norm, a citizen of lVurtemberg, andresident of Franklin. county of Xorfolk, Commonwealth of Massachusetts,have invented an Improvement in Reenforced Cartons, of which thefollowing description, in connection with the accompanying drawings, isa specification. like characters on the drawings representing like partsin each of the several views.

This invention relates to cartons or boxes produced from a piece ofpaper or corrugated paper-board or card-board or the like slitted andfolded according to common practice to produce a one-piece box, thoughthe invention is not to be understood as necessarily limited toone-piece box constructions. 'In boxes thus produced from folded paperstock it is well known that the weakest points in the box and where itis most apt to tear or break down are at the folded lateral cornerswhere strains are most apt to be localized and where the fold and creasein the paper stock render it less resistant. The object of the presentinvention is to provide a box made of paper or paper-board or like stockspecially reenforced with strengthening filaments that may be embeddedtherein and extending around the folded box corners so that these aregreatly strengthened and made capable of resisting and withstanding anystrains apt to be imposed thereon. The foregoing and other objects andadvantages of the invention will more fully appear fromthe followingdetailed description, and the distinctive features of novelty will bepointed out in the appended claims.

Referring to the drawings:

Fig. 1 is a plan view showing a blank of paper or paper-board stockformed in readi ness for folding to produce a one-piece box andreenforced in accordance with my in- 45 vention;

Fig. 2 is a perspective view of the box produced in accordance with myinvention and illustrating the reinforcing feature;

Fig. 3 is a perspective view illustrating more particularly a manner inwhich the reinforcing filaments may be applied to the corrugatedpaper-board-stock;

Fig. 4' is a perspective view showing a modified form of the invention;and

Fig. 5 is a perspective view illustrating more serviceable.

more particularly the character of reinforcing. means in the form ofFig.4. Theblank 10 is produced of a single piece of paper or paper-boardstock as usual creased or otherwise adapted to be folded along the lines10*, 10 10 to produce the sides of the box and slitted inwardly from thesides thereof as indicated at 10, 10 to produce flaps adapted to befolded in any overlapping relation to form the bottom and toprespectively of the box. One end of this blank is shown as equipped witha small projecting flap 10 adapted for folding over the abut-ting edgeatthe other end of the blank when folded thereagainst to secure the boxstructure together all in accordance with the usual practice. Inaccordance with my invention reenforcing filaments 11, 12 are applied tothe blank 10 running lengthwise thereof and just within the ends of theslits 10", 10*, these filaments in the case of duplex or multiplex paperstocks as commonly employed for mak1n boxes being applied between thelayers 0 the blank and embedded in the adhesive binder thereof. When thebox blank thus constituted is folded to produce a box the filaments 11,12 will thus extend around corners of the box at top and bottom, i. e.,at the points where tearing and breaking down of the box is most apt tooccur, im-; parting thus a strengthening and resistant property to thebox andmaking it thus The projecting extremities 11 12 of the filamentsat the ends of the blank may be secured together by tying or, otherwiseindicated at 13 so that all the corners of the box are correspondinglyreenforced. The filaments 11, 12 maybe either of metallic wires or oftextile threads and 95 they may be located either as indicated withinthe extremities of the slits 10, 10 only, or they may be appliedthroughout the extent of the stock if desired. In Fig. i 3 I show ausual form of three-ply paper- 100 board stock 10 adapted for thepresent purpose, and in this the reenforcing filaments 11 may beembedded between the intermediate corrugated layer and the outer. plainlayers.

In Figs. 4 and 5 I show a form of the inv ention wherein instead of thefilaments 11,

12, one or more flat thin reenforcing strips W which may be of tin-plateor the like may be employed to reinforce the corners of the 1 i box asdescribed. Inthis case a three-ply paper stock with a corrugatedintermediate layer is shown and between the plies thereof one or morethin flat strips of metal may be applied, there being as shown two ofthese strips 110 at the top of the box and one such strip at the bottomof the box. The ends of these strips Where they come together inoverlapping relation may be riveted'or otherwise secured together asindicated at so that all the corners of the box are properly reenforced.The reference herein and in the appended claims to paper or paper-boardstock as the material of which the box is made is to be understood asonly illustrative and intended to V typify any suitable sheet stock ofwhich cartons or boxes may be made by folding the same after a mannergenerally as set forth.

I am aware that the invention maybe embodied in other specific formswithout departing from thespirit or essential attri butes thereof, and Itherefore desire the present embodiment to be considered in all respectsas illustrative and not restrictive, reference being hadto the appendedclaims rather than to the foregoing description to indicate the scope ofthe invention.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

A box or carton produced of a single sheet of paper stock slitted onboth sides at intervals to produce flaps for folding i ward to form thetop and bottom of the box, with reinforcing filaments embedded thereinextending longw-ise of the blank and localized directly inward of theinner ends of said slits, the extremities of said filaments projectingfrom the sheet and securing the abutting edges of the sheet together atthe box corner.

In testimony whereof, I have signed my name to this specification.

KURT WANDEL.

